Market "crashing"

so i cant download anything on the market, im stock, but im rooted with z4root, i also have titainium back up pro, its been happening eversince i totaly restored my phone with RSD lite or w.e, since i put on the fission rom and it dident wanna load, i kept getting the same error messages im getting now with the market but for diffrent things, so i RSD'd it and now itll begin to install something and then say "the application market (process com.andriod.vending) has stopped unexpectedly. please try again" i reset the phone, pulled the battery, it doesnt work on either wifi or 3g, and i have yet to factory reset the phone but im waiting to do that to see if theres another option

so i cant download anything on the market, im stock, but im rooted with z4root, i also have titainium back up pro, its been happening eversince i totaly restored my phone with RSD lite or w.e, since i put on the fission rom and it dident wanna load, i kept getting the same error messages im getting now with the market but for diffrent things, so i RSD'd it and now itll begin to install something and then say "the application market (process com.andriod.vending) has stopped unexpectedly. please try again" i reset the phone, pulled the battery, it doesnt work on either wifi or 3g, and i have yet to factory reset the phone but im waiting to do that to see if theres another option

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If your phone has been through a ROM change and multiple SBF restores, there's pretty much no way your data partition is still in a well-working state. As anoying as it is, I would reccomend you clear your cache and data (i.e. a factory reset) and redo the SBF to get a perfectly clean phone. Then re-root and maybe give Fission another try. The problem is, when you change ROMs, you almost always have to factory reset (unless special care was taken by the ROM developer to make things stay compatible).

Ah. Well, my suggestion to you is to get Bootstrapper, install it, reboot into recovery, do a wipe (but not a factory reset) if the option exists in Bootstrapper, reboot, uninstall Bootstrapper with terminal commands (I can provide those) and see if it fixes things. If not, you should do it manually.